[INFO] cloning repository Floppy/ruby-version-badger
[INFO] running `"git" "clone" "--bare" "git://github.com/Floppy/ruby-version-badger.git" "work/cache/sources/gh/Floppy/ruby-version-badger"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/Floppy/ruby-version-badger'...
[INFO] running `"git" "clone" "work/cache/sources/gh/Floppy/ruby-version-badger" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/Floppy/ruby-version-badger"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/Floppy/ruby-version-badger'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Floppy/ruby-version-badger" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/Floppy/ruby-version-badger"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/Floppy/ruby-version-badger'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e94cf103ecb5c2a7c3942c2c94d819402f3b1c8d
[INFO] sha for GitHub repo Floppy/ruby-version-badger: e94cf103ecb5c2a7c3942c2c94d819402f3b1c8d
[INFO] validating manifest of Floppy/ruby-version-badger on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Floppy/ruby-version-badger on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Floppy/ruby-version-badger
[INFO] finished frobbing Floppy/ruby-version-badger
[INFO] frobbed toml for Floppy/ruby-version-badger written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/Floppy/ruby-version-badger/Cargo.toml
[INFO] started frobbing Floppy/ruby-version-badger
[INFO] finished frobbing Floppy/ruby-version-badger
[INFO] frobbed toml for Floppy/ruby-version-badger written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/Floppy/ruby-version-badger/Cargo.toml
[INFO] crate Floppy/ruby-version-badger already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking Floppy/ruby-version-badger against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-1/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/Floppy/ruby-version-badger:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e820d52608e530da447977fed5fc7ec16d7ab076812c389243ee1c7b5bc90c16
[INFO] running `"docker" "start" "-a" "e820d52608e530da447977fed5fc7ec16d7ab076812c389243ee1c7b5bc90c16"`
[INFO] [stderr] warning: unused manifest key: package.target
[INFO] [stderr]     Checking native-tls v0.1.5
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking tokio-tls v0.1.4
[INFO] [stderr]     Checking hyper v0.11.21
[INFO] [stderr]     Checking hyper-tls v0.1.2
[INFO] [stderr]     Checking reqwest v0.8.5
[INFO] [stderr]     Checking ruby-version-badger v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `version` is never read
[INFO] [stderr]   --> src/ruby.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut version = "unknown".to_string();
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `version` is never read
[INFO] [stderr]   --> src/rust.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut version = "unknown".to_string();
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `version` is never read
[INFO] [stderr]   --> src/node.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut version = "unknown".to_string();
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `language`
[INFO] [stderr]   --> src/config.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn language(lang: String) -> Result<yaml::Yaml, Error> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     env_logger::init();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `version` is never read
[INFO] [stderr]   --> src/ruby.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut version = "unknown".to_string();
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `version` is never read
[INFO] [stderr]   --> src/rust.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut version = "unknown".to_string();
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `version` is never read
[INFO] [stderr]   --> src/node.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut version = "unknown".to_string();
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     env_logger::init();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.22s
[INFO] running `"docker" "inspect" "e820d52608e530da447977fed5fc7ec16d7ab076812c389243ee1c7b5bc90c16"`
[INFO] running `"docker" "rm" "-f" "e820d52608e530da447977fed5fc7ec16d7ab076812c389243ee1c7b5bc90c16"`
[INFO] [stdout] e820d52608e530da447977fed5fc7ec16d7ab076812c389243ee1c7b5bc90c16